[whatwg] Canvas pixel manipulation and performance
parasyte at kodewerx.org
Sun Nov 29 13:14:02 PST 2009
On Nov 29, 2009, at 1:57 PM, Boris Zbarsky wrote:
> So the new code has to do about half as much tile decoding, as well as half the number of imagedata[n] sets? Or was the decoding already being cached?
Decoded tiles were already cached. It actually builds MORE tile caches now, though: one cache for each this.fgmap. So that's more (a lot more) tile decoding, but far fewer pixel pokes.
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